Dayu Electronics: Detailed Core Structural Dimensions of Underwater Communication Equipment
In complex applications such as underwater robots, ocean observation platforms, and diving operations, reliable underwater communication is the lifeline for ensuring control command transmission and data feedback. When customers integrate or design enclosures, a critical and common question is: "What is the size of the lower transmitting surface of your underwater communication equipment? How much installation space is required for the internal circuit board?" Clear mechanical and structural dimensions are the prerequisite for completing product integration design.

To this end, we hereby publish the key structural dimensions of a typical underwater acoustic communication module for the reference of engineers and partners in their design work.
I. Acoustic Transmitting Surface Dimensions: 26mm × 88.4mm
The transmitting surface at the lower end of the equipment is the core radiation window of the acoustic transducer, and its dimensions directly affect acoustic performance and installation interface. This transmitting surface is a precision-machined rectangular structure with the following specific dimensions:
Length 88.4mm × Width 26mm.
This design balances acoustic efficiency and structural compactness, facilitating integration in limited spaces while ensuring effective coupling of acoustic signals into water for stable transmission.

II. Internal Core Board Dimensions: Diameter 65mm, Stack Height 40mm
The equipment integrates all core circuits including signal processing, coding and modulation, and driver amplification. The main circuit board adopts a classic dual-layer stacked design to maximize space utilization. The package dimensions are as follows:
Board diameter: Φ65±1mm. This circular design helps achieve optimal spatial layout and stress distribution within a cylindrical pressure housing.
Overall stack height: When the two core boards are assembled via precision connectors, the total height is 40mm±3mm.
This "dual-board stacked" architecture ensures complete integration of all complex circuit functions while achieving extreme miniaturization, making it ideal for underwater vehicles or portable observation equipment with stringent space requirements.

Value of Structural Design: Enabling Integration
Clear mechanical dimensions are the cornerstone of cross-team collaboration and product integration. Knowing the transmitting surface dimensions helps you design the sealing window and mounting interface at the bottom of the enclosure; understanding the internal board diameter and height allows precise planning of internal layout and wiring, ensuring structural strength and thermal dissipation requirements.
The above dimensions are for the standard model. If you have special custom dimensional or structural requirements, our engineering team can provide in-depth support. We hope these key data effectively assist your project design and integration. Choosing our underwater communication module gives you not only a reliable communication solution, but also a "partner" that has been carefully considered at the mechanical, electrical, and acoustic levels.

Dayu Electronics' main products fall into four categories: industrial instrumentation, industrial sensors, marine equipment, and ultrasonic transducers. Application scenarios include ultrasonic distance measurement, monitoring of water level/flow rate/flow volume/mud level/water depth, and underwater communication/positioning/obstacle avoidance.
